Brake apparatus for elevator-cars.



Nu. 669,093. Patented Mar. 5, I901. M. L. MATTSUN.

BRAKE APPARATUS FOR ELEVATOR CARS.

(Appliclition filed Aug. 29, 1900.)

(No Model.)

WM INVE/VfOR V a ww/ @472 "rats MAGNUS LEONARDdl/IATTSON, OF NEW YORK,N.

BRAKE APPARATUS FOR ELEVATOR-CARS.v

SPECIFICATION forming part of Letters Patent No. 669,093, dated March 5,1901.

Application filed August 29,1900. Serial No. 28,403. (No model.)

To all whom, it may concern:

Be it known that LMAeNUs LEONARD llIATT- SON, a citizen of the UnitedStates of America, and a resident of the borough of Manhattan, New Yorkcity, and State of New York, have invented certain new and usefulImprovements in Brake Apparatus for Elevator-Oars, of which thefollowing is a specification.

The object of my invention is to provide a simple and cheap buteffective brake, more particularly for freight-elevator cars, to beoperated by the conductor, the construction and operation of which Iwill proceed to describe, reference being made to the accompanyingdrawings, in which- Figure l is a plan View of an inverted car with myimproved brake apparatus applied and a horizontal section of theguide-posts and guideways; and Fig. 2 is a side elevation of the lowerpart of the car, brake apparatus, and parts of the guide-posts andguideways.

A represents the guide-posts; a, the guideways; 1), the car-platform,and c the posts of the car.

The middle portion of the under side of the ear between the posts 0 isreinforced with a strong metallic plate d, and at the center of thisplate is a downwardly'projecting pivotstud e, on which a double-actingcam fis pivoted, so as to turn freely, and the cam is provided with alever g for actuating it, said lever preferably ranging in the directionof one of the posts 0 of the car and reaching nearly thereto. A pair ofstrong thrust-bars h are arranged in suitable slideways '5 between thecam and the guide-posts, respectively, to be thrust outward against theguide-posts by the cam and brake the car by frictional contact with saidposts when the cam is actuated by the conductor, for which a ropej isattached to the free end of the lever and extended laterally therefromunder a guide-pulley it and thence upward in any suitable arrangementabove the car-platform adapted for the conductor to grasp it when thecar is falling to operate the cam. In this example said rope isrepresented as arranged over a pulley Z, located in an elevated positionon the car and provided with a handle m, pendent from the pulley. Theheads of the thrust-bars acting on the guide-posts are suitably notchedat n to straddle the guidewa-ys a, and bear principally on the postseach side of the guideways; but they may bear to some extent in thebottoms of the notches on the guideways, if desired.

Retracting-springs 0 are connected to the thrust-bars for withdrawingthem when the cam is released by the conductor. These springs may bearranged in any approved way. In this example they are connected to thethrust-bars respectively; but they may be arranged in any other suitableway.

In this example of myinvention the thrustbars and the operating cam andleverare arranged under the platform, which is thought to be the bestposition for sustaining the shock arranged, if desiredfor example, underthe upper cross-head of the car.

What I claim as my invention is 1. The combination with the car and theguide-posts, of a pair of thrust-bars, arranged in a line transverselyof the car and adapted to be thrust in opposite directionsrespectivelyagainstsaid posts, a double-acting cam arranged between theinner ends of said thrust-bars, a lever attached to the cam foroperating it, a pull-cord and guide-pulleys therefor, to operate thelever, and springs to retract the thrust-bars, said pull-cord extendedupward in the car suitably for being grasped by the conductor.

guide-posts,of the reinforcing-plate under the middle of'the platform ofthe car, pendent pivot-stud centrally located on said reinforcing-plate,doubleacting cam and its actuat ing-lever mounted on said pivot,thrust-bars carried in slideways of said reinforcing-plate and adaptedto be thrust against the guideposts respectively by the cam, and theleveractuating cord and guide-pulleys arranged for carrying the cordsuitably for use by the conductor for applying the brakes.

Signed at New York city, New York, this 30th day of June, 1900.

MAGNUS LEONARD MATTSON.

Witnesses:

O. SEDGWIOK, J. M. HOWARD.

of the falling car; but they may be otherwise 2. The combination withthe car and the

